Pile-wire cutter



Patented Feb. 1, 1927.

l UNITE STTES' TENT-orner. f

IVIARCUS B. BEHRMAN, OF NEW YORK,` N.' Y., ASSIGNOR TO THE LOX SEAL GOR- PORATION, 0F BROOKLYN, NEW YORK, A' CORPORATION OF NEW YORK. i Y

PILE-WIRE CUTTER.

Application filed November 12, 1924. Serial'Na 749,447.

My vinvention'relates generally to a pile cutting means for the'type of looms which weave pile fabrics and more particularly to an association with the pile wires generally employed Yin such looms, of a cutter for cutting the loops as the pile wires are withdrawn.

In looms which employ pile wires, the warp threads are generally looped over these wires and when it is desired to produce a cut pile fabric, cutters are so associated with the pile wires that upon withdrawal of the wires from the fabric,rthe cutters will cut through the loops. Due to the rapidity with which these pile wires are thrown in and withdrawn and the number of threadsto be cut upon each withdrawal, each cutting edge is subject to a great number fof cutting operations in a short time and therefore dulls quickly and such edges must obviously therefore be either frequently resharpened or frequently replaced.

The use of a cutter which is separable from the pile wire for permitting replacement'of the blade is attended with a number of problems` among which is that any arrangement for securing the blade in position which on the one hand will .serve to hold the blade in association with the pile wire so that it will not shift therein nor will it be accident-ally separated therefrom, may on the other hand so secure the blade as to render its removalv difficult and time consuming.

One of the important objects of my invention, therefore, is the provision of an arrangement whereby a cutting blade is so associated with the pilevk wire that while it is fixedly held in position thereon and l against accidental movement, its quick and effective removal is permitted.

Looms of thetype referred to are already provided with pile wires and it is one of the important objects of my invention to so devise thecutter and its manner of association with a pile wire that the cutter can be associated with the conventional form of pile wire without requiring a replacement of the pile wires or any substantial change or reconstruction therein.

My invention further involves the provision whereby a blade of a flexible `wafer type made from sheet material may be em,- ployed and an arrangement for so supporting the blade that will not require any substantial flexingof the blade either for purposes of insertion or for removal. y Y Y ./Vhere I have attempted to employ an arrangement for holding the blade in position which depends wholly upon a gripping engagement to prevent movement in one direction, I have found that in the :movement of the pile wires back 'and forth in the operation of-Weaving, the effectiveness 0f the gripping engagement is diminished `to a considerable extent by the fact that grease and oil tend to work into the pile wire and n coming into contact with the blade and with the means of holding itin position, tend to cause a loosening of the grip and that as a result a blade will frequently work loose from the holder and move freely in one direction.

My invention, therefore1 involves the provision of an arrangement for positively holdingthe blade in position and coordinately involves more particularly, the association with a gripping engagement for holding the blade in position against move-` ment in one direction of an arrangement for positively holding the blade against movement in the holder in such direction,

should the blade work loose ,from its gripping engagement. 7 A

My 'nvention further involves the provision of a simple, inexpensive and efficient cutting blade and of a novel, simple, readily operable, inexpensive manner of associating the blade with the pile wire so as to permit the blade on the one hand to perform its function at a maximum of effectiveness, and at the same time to permit'of itsk quick removal andireplacem'ent.

VFor the attainmentv of these objects and such other objects as may hereinafter ap`v pear or be pointed out, I have illustrated one embodiment of the invention in the drawings whereinv Fi 1 is an elevational view of the pile wire with the blade in position;

Fig. 2 is an enlarged, cross-sectional view centrally longitudinally of the holder por tion of the pile wire;

Fig. 3 is a section taken on line 3-3 of Fig. 2; Y -v Fig. 4 is a section on line 4-4of Fig. 2. Upon viewing Fig. 1 of the drawings, it will be observed that my arrangement shown in this embodiment for associating the blade` with the pile of wire comprises a holder ,10 Which may be made either integral With the pile Wire or an attachment thereto'and which is in the form of a thin strip of sheet Y fmaterial bent so as to l'provide a channeled construction which is preferably, though Y Y. not necessarlyY Us`haped in cross section', the

Vchannel 13 being deiinedby the Walls 1-1 and12 upstanding from the bottom 14:, the

VWalls of the channel 13V 1being `spaced -so as 4to freely receive therein the blade, to be described more Ain detail t'hereafter, and for reasons that IWil-l appear ior be pointed out short-fly, the part of the Wall 1l Which eX- t'ends beyond the channel is caused'fto gradually increase 'and then decrease in vheight Vtor'vard's-the rontor terminal portion 15a thereof, which apex portion is curved transversely as more Vclearlyshown in Fig. 3 Vof the drawing, as va result olf' which there is i-sbe'nt across thelcha-nnel 13 so as to form `a crosspiece '18, "the free end :of "which is received through an opening 19 inthe Wall 11 rand secured therein in any preferred or desired vmanner las by brasing or Welding.

4The blade 20 may be given the shapel shown `in Fig; 2 vin which itis yprovided with the bottom '21', the 'cutting'. edge 22 at an angle thereto, and the projecting guide and locking member 23 Which vextends from the blade lin a .direction opposite Vfrom 'that oi Y vthe cutting edge '22, and which, as shown, merges into the topmost p'ortionof the blade i 22 by the inclined Wall 25. The upper edge 260i this extension is preferably inclined o'f'p'ositely to the inclination of the cutting el'ge 22 `vand its position above Vthe bottom 21 of the bladeis such "that 'asthe blade is moved along the channel 13,"With 'its bottom injcon'tact'with the bottom oie the lholder 10,."th'e gguide extension 23 is Vmoved along Ybeneath ithe cro'sspiece 18 Withthe inclined top 26 thereof injengagement with 'the-cross piece, ksothat"as the movementis continued, a gripping "engagement between the blade and the fhold'er 10 will thereby result, which Will be of'an increasingly elective character as theblade 20 is. moved along the holder;

It Will be understood that this character of grip engagement Will positively fhold lthe bladev against movement beyond the Vpre- Vdetermined point toward the liront end lof the holder, that is,fto\vard the 'apex 15', and

Y kthat prevention of movement inthe opposite direction -Willbe dependent upon the character 'ofthe `gripping 'engagement between the, .inclined surface 26 andthelcrosspiece A18.

I. 'have ifound ftha't, While this lcharacter V ofJgrppingaction 'is ordinarily '-s'ucent to lo'ld thelblade in position againstthe'move- Work into the channel member, and that as a result thereof, there will be a tendency Y Y occasionally for the gripping action between the 4incliner-l surface 26 and the'crosspiece f 18 to become less effective, even to the ,point Where the blade 20 Will-begin to move back and 'forth in theholdrer. of preventing any movement of the blade, should the gripping-engagement become less effective for ythe reasons set forth, `or 'for 1 For 'fthe purpose any reasons, I have provided an ar-rangement which I vWill novv describe:

` From that Ipartfof the spoon-liilreend 15, which extends beyond the -Wall 12, I provide a 'tang 31 shoifvn more clearly i-n Fig. 3.0i the drawing,

is bent angularly across the path ofv the channel`l13 with the free Iend oi the tang 31 directed generally toward the iront end 15a and the end 35 thereof will lform an abutment across the path of the `channel and the innerv surface "35aL thereof 'inclines outwardly from the abutment Wall 35 1to- Ward the innersurface of fthe Wall l11 into l which it ywill merge. The blade 2O is provided with a coacting and which -as will be ob-` served is out awa alonel three sides and part Which in the illustrated `embodiment Y is the slot 32 so Vpositioned 'that as la blade is caused to have its gripping engagement With the Icrosspieee 18 as already set Iforth, the rear end 33 of' the blade will be `tore-'ed over and past the tang 31. In this movement either this rear-end 33 of the cutting implement Vor the tan-g ior both, as the vcase may be, Will 'flex laterally depending alpen the relative gs'tiness of the'v materials `out of which the blade-and the holder are made and the tang Will then position -itselffV in thecut away portion 32 Vof the lblade 20 andy will position 'its extreme for-Ward part 35 immediately kin back of the' Wall A436 of the part -33 Wh-iclh Wall 36 definesV 'in part the slot 32 and thus ser-ves as a 'positive stop to prevent movement 'of the lblade V'beyond it toward the rear Aof the pile Wire.

In the illustrated embodiment, l prefer to show the metal/'oil which the holder-is made as being of such character with lrelation to vthe metal ofwhich the blade is made, that it is fthe forward part ef the Yblade 33 which Heres in this movement.

'a result or' this arrangemcntfit will be "miderstood, therefore, 4that as the blade is moved into the channel 13 toward 4the 'inner end, a 'gripping engagement between Vthe inclined'wall 26 and 'thecrosspiece l18 Will ensue, Which will be of jan increasingly/'eife'ctive character as the 'blade is continued in such movement, and at a predetermined 'Hill between the. parts y the blade is moved point, due to the positioning and dimensioning of the various part-s, the partjB will slip over the tang 3l, which tang will then ,be positioned in back of the part 33 to preventa retrograde movementl of the blade, that is, a movement to the right, in Fig. 3. In other words, the gripping engagement 26 Aand 18 and the chai-f acter Vof the top of the blade are such as to limit the movement of the blade tothe left, and the association of the tang 3l with the rear wall 36 of the part 83 will prevent and positively stop any movement of the blade in the opposite direction, that is to the right. L

It will be observed that with this arrangement, the inclined surface 26 and the slot 32 are formed on a part of the blade 'that ei:- tends to the rear of the cutting edge 22, and that therefore I not only secure the blade to the holder, wholly through the engagenfient 'of that part of the blade which carries no cutting edge, but that the engaging means of which the tang 3l isa part, is positioned at a point in the holder which is open laterally through one side thereof, so that the release of the blade can be quickly effected and where it is desired for any reason whatsoever to eect the release of the blade by braking off the part 33 thereof, this can be done very readily.

It will be further observed that the height or width of the intermediate part of the spoon is much greater than that of the tang 3l and that the tang is positioned a substantial distance below the top of the spoon, so that the inner surface of the spoon l5 will serve to support and guide the blade end 33 over the inclined surface 35a.

Having thus described my invention and illustrated its use what I claim as new and desire to secure by Letters Patent isl. For use in looms for weaving pile fabrics, a pile Wire having onV one end a holder provided with a recess, and a crossbar crossing said recess above the bottom thereof; and a blade seated in said recess with its cutting edge exposed above the same, said blade having a lower edge to engage the bottom of the holder and an upper edge inclined downwardly and outwardly to wedge against said cross-bar, said incline being of such character that when along the recess toward the free extremity of the pile wire, an increasing gripping engagement will result which engagement will hold the blade in position against removal and means operative upon the movement of the blade into gripping engagement to prevent a movement of the blade in the opposite direction, and means comprising a linger struck up from the holder.

2. For use in looms for weaving pile fabrics, a holder adapted to form a part of a pile wire and Vhaving a channel to receivek a cutting implement or blade with one edge of the implement seated on the bottom of the channel, and means on said holder for holding the blade against movement in said channel, including a member formed onl the holder inwardly of its free end and projecting inwardly'into the cha`nnel and spaced a substantial distance below the vtop of the holder, said member presenting an inclined surface which merges into the inner surface of one of the -walls forming the channel in the vdirection of the rear end of the holder, whereby a blade can be moved over said inclined surface -to bring a portion of the blade in back of it.

3. F or use in looms for weaving pile fabrics, a'holder adapted to form part of a pile wire and having a channel to receive a cutting implement or blade with one edge of the implement seated in the channel, and means for holding'a blade against movement on said channel, said means` including a member punched up from one of the walls of the channel along three sides and having arportion thereof presented in the path of` movement of an implement in the channel, said member being directed generally toward the front end of the holder.

Ll. For use in looms for yweaving' `pile .1

fabrics aholde-r ada ted to form )art of a 2 1 pile wire and having a cnannel to receive a cutting implement or blade with one edge of the implement seated on the bottom of the channel, andvmeans on said holder for holding the blade against 4movement in said channel, including a member punched up from the holder and having a portion projecting inwardly into the path of a cutting implement in the channel and spaced a substantial distance below the top of the holder, said member extending generally toward the front of the holder.

5. For use in looms for weaving pile fabrics, a holder adapted to form part of a pile wire and having a channel to receive a cutting implement or blade with one edge of the implement seated on the bottom of the channel, and means for holding the blade against movement in said channel, said means including a member punched up from one of the walls of the channel along three sides and Vforced angularly inwardly into the path of the channel and directed generally toward the vfront end of the holder and terminating a substantial distance therefrom whereby a blade can be moved in the channel over said member.

6. For use with a holder adapted to form partof a pile wire having a channel to receive a cutting implement with one edge of the implement seated on the bottom of the channel and having a plurality of abutments extending into the path of the implement in the channel, a cutting implement, a plurality lio (of engaging .portiens therein `:rll positioned ,the abutlnerlits. on the holder to prevent movement in one direction and `another of ,Y seid engaging portions .on the cutting-ini- Vplemeifit being .arranged toV coac't lwith an# other of said ebntinents'fon the holder it@ Aprevent moyen-lent in the feppesitel direction. 7.101 use in leems- ,for Weaving pile fabrics', n holder adapted te forni part of a pile Wire-end having e channel te receive e cutting implement or blade with one 'edge olf vthe infiplenient eea-eed en the bottoni of `thel channel, a bled-e Seated in ea'ifd chan-nel, means i'erpreventinbg inoifelneiit `of the blade relatively vto the channel, said ineens inclu-d a finger projeetii-igv integrally from fthe welll of fthe channel eand directed into the Vchannel generally in' the vdirectlen of vthe front end -off fthe helder, ft'ne finger ben'g relatively hiere rigidthan the bla-de so that when a blade is vmoved in Ythe channel over theiinger, the A"blade will yield to `per-Init a portion thereof vt0 be positioned in 'abutting relation-te and in backci" the Iinger.

' 8'. A pile Wire -for looms havin-g' e binde `holder located rt one end and lievingcne Wall extending' beyond the other to forni e spoon-end for thel Wire, said helder being provided with afgroove formed therein and neme/re blade is moved mtofits :predetermined arssocie'ti'on Vwith seid abutment.

l9. A pille Wire for looms having .e iblznde holder 'loca-tednt one end t-liereoi1 and hav'- ing two Walls presenting between ftliein a greove, 1one of said- Wells yharming labutinent formed thereon, a knife-,blindeunwanted Withinsafid grooyeend havingfar lpe-rtr'olf its perimeter engaging said abutment, and va, locking member for-ined nltegrallf with one of said Wallis and adapted-to automatically engage with said blade and thereby feeoperafee with said-.abutment Ito ho :el said blede Within said grec-ye, said -ineinber and blade 'being -so1 arranged'and construeted ltheft one will automatically be sprung lzvterlfly rela-- tively to Jl'ie other te vpermit insertion land 1removal -o-tf said bla-de- Without i'exing fthe latter.

MARCUS n'. BEHRMAN. 

